// 与原始类型对应的是对象类型
// 只要不是原始类型就都是对象类型

let x = new Object();
console.log(x, typeof x ); // `{}` `object`
console.log(x.toString());

let p = new Object();
p.name = '三丰';
p.age = 100;
console.log(p, typeof p ); // `{ name: '三丰', age: 100 }` `object`

let d = new Date();
console.log(d, typeof d );

let s = {
    id: 1001,
    name: '阿芳',
    age: 18
}
console.log(s, typeof s );

let arr = [10,20,30];
console.log(arr, typeof arr );
